#include <stdio.h>
#include <unistd.h>

int main()
{
  pid_t id = fork();
  if (id == 0)
  {
    while (1)
    {
      printf("我是子进程：pid：%d，ppid：%d\n", getpid(), getppid());
      sleep(1);
    }
  }
  else{
    int cnt = 10;
    while (1)
    {
      printf("我是父进程：pid：%d，ppid: %d\n", getpid(), getppid());
      sleep(1);
      if (cnt-- <= 0) break;
    }
  }
  return 0;
}
